send in vs visit

send in is not a noun while visit is a noun.

Word	Noun	Adjective	Verb	Adverb
send in	No	No	Yes	No
visit	Yes	No	Yes	No

send in (noun)	visit (noun)
	the act of going to see some person in a professional capacity
	the act of visiting in an official capacity (as for an inspection)
	the act of going to see some person or place or thing for a short time
	a temporary stay (e.g., as a guest)
	a meeting arranged by the visitor to see someone (such as a doctor or lawyer) for treatment or advice

send in (verb)	visit (verb)
mail in; cause to be delivered	assail
give one's name or calling card to a servant when making a formal visit	talk socially without exchanging too much information
	impose something unpleasant
	go to certain places as for sightseeing
	come to see in an official or professional capacity
	pay a brief visit
	go to see a place, as for entertainment
	stay with as a guest